An Automatic Identification System (AIS) was installed on a barge. The AIS is active using solar panels with charge controller and battery to supply electric power at day time and night time. Such a novel actively AIS can offer the Speed over Ground (SOG), Course over Ground (COG), and position to tugboat for informing the Master and Officer about the sailing conditions of barge to maintain the towline tension stably and safety of navigation. The AIS also broadcasts the sailing status of barge to other ships in vicinity to maintain situational awareness of collision avoidance. Using this reliable theoretical calculation about the limit tension value of towing line with yawing motion can avoid the limit value of towline tension less than total maximum displacement of tugboat and barge. Those results contribute practical significance for improving the safety of towing operation and navigation at real time.

驳船上安装了自动识别系统（AIS）。AIS 主动使用带有充电控制器的太阳能电池板和电池在白天和夜间提供电力。这种新颖的主动式AIS可以向拖船提供对地航速（SOG）、对地航向（COG）和位置信息，告知船长和高级船员有关驳船的航行状况，以保持拖缆张力稳定和航行安全。AIS还会向附近的其他船舶广播驳船的航行状态，以保持避碰的态势感知。利用这种可靠的理论计算偏航运动拖缆张力极限值，可以避免拖缆张力极限值小于拖船和驳船总最大排水量。